Concrete structure



Oct. 20, 1925.

R. McwlLLlAMs- CONCRET TTTTTTTTT E 7 .-ATToRNEY. l

Patented Oct. 20, 19235.

UNITED STATES PA TENT RoWLANnMcwiLIQIAMsoF NEW YORK, N. Y.

CONCRETE STRUCTURE.

. Application mea August 19, 1920. Aserial No. 464,639. i L

' tance fromeach other.' Then used in coning the invention will now be described in' detail with reference to the. accompanying drawings, in which- Fig. 1 is a partial plan view oit-'a floor or ceiling embodying one form of my invention; Fig. 2 is` a cross'sec'tim on line 2-2 of Fig. l; Fig is a plan showing part of a door or ceiling with a second form of my invention; Fig. 4 is a vertical section on line 4-4 of Fig. 3; Fig. 5 is a partial perspective view showing the two members of a spacing device, before said members are assembled; Fig. 6 is ai perspective viewv of the spacing device employed in the construction Figs. 8 and 4; Fig. 7 shows a beam embodying my invention, in section on line 7 7 of Fig. 8; Fig. 8 isa cross section of said beam' on line 8 8 of Fig. 7; Fig. 9 is a horizontal section of a column embodying my invention, on line 9-9 of Fig. 10, the latter being a vertical section on line 10--10 of Fig. 9; and Fig. l1 is a partial horizontal section of a modication.

In each form of my invention illustrated herein, the improved spacing device comprises two members intersecting substantially in X-fashion and having their ends bent relatively to their main portions. These members may consist of bands of thin sheet metal (preferably iron), connected at their crossing points in any suitable manner, as by slitting each of the members A, B for half its width and then fitting them together as indicated best'in Figs. 5, 6, and if desired the members may then be welded together at their intersections. The ends of the members are bent in accordance with the particular structure in which. they are to be used..

"hnspin'F lgs/1 and Q, eah ofthe yfour ends C is bent in Vits fullwidth vin such way thatthese ends will be parallel with, eachother, and ,thoseatf adjacentends of different members will lie inthe same plane, all ofthe ends C extendingoutwardly, that is to say, the` aligning ends, extend inl opposite directions from the respective menibers A, B, asv shown in Figs. 1 and` 2, the parallel ends C of these spacing devices en gage blocks D of two adjacent ,parallel rows, thus keeping' said:` rowsfat the fproperdistance from each other. ,l The spacing devices also serve as supports or. chairs .for the lreinforcing rods E whichi'in this particular constructiony extend in one direction only, parallel to thevrows o-blockrs D. 1 It .will be understoodthat whenthe lstructure isfinished, thespacing devices` aswell. as the 're-A or entirely ina body ofconcrete F.; 1

. :In a two-way re-inforced Constructioman example of which is shown inFigsgS and-4, the kspacing' devices are of the same character as described above,vbut their ends are slit lengthwise at a level midway between the top and the bottom (Fig. 6), thus forming eight end portions C to C8 inclusive of hall.` the height of the members A, B, the two upper portions C, C2 and the two lower inforcingrods are imbeddedA either partly portions C3, Ct being parallel and occupying the same relation to each other (so far as their directionis concerned) as the ends C first described, while the aligning lower portions C5, CG are parallel to the aligning yupper yportions C7, C8 are parallel to each other butvat right angles to the portions C" to C4. the portions C to Cs form angular pockets at the four ends of the intersectingk members A, B, and-by bringing the walls of these pockets into engagement with the corners of blocks D arranged in rows of'two intersecting directions, as indicated in Figs. 3 and 4, I not only preserve the proper spacing between-adjacent rows, but give leach individual block its correct position. In this case also, the spacing device serves as a support or chair for the re-inforcing rods Ff, E2 arranged between the blocks and imbedded in a body of concrete (not shown).

In Figs. 7 and 8, F indicates the concrete body of a beam having parallel're-inforcing rods E3 located in its interior and imbedded in the concrete, together with chairs or spacing devices of the character shown inpFg Being bent in different directions,

l, but preferably in this case the ends C are made longer than in Fig. l. These spacing devices hold the rods Es in the proper initial position. Y

In Figs. 9 and l0 spacing devices of the Acharacter described with reference to Figs.

3, 4 and 6 are shown within a column ot concrete F reinforced by vertical rods E* (round or square) extending within the pockets at the ends of the intersecting niembers A, B. The rods may be Welded to the spacing devices, which also act as ties. Fig. 9 shows the lbent ends of the spacing devices in alignment with one another, in substantially the same manner in which the end C5 of Fig. 6- aligns with the endCG, and the end C7 of said Fig. 6 with the end C8. As indicated in Fig. 11,l the ends of the spacing members may be bent around the rods E4 if desired.

While I have disclosed my invention in its special application to horizontal elements, such as floors, ceilings or beams and to columns, it will'be understood that thel position in whichy the structure is used is immaterial to my invention. Various modifications maybe made without depart ing Afrom the nature of myinventioii as set forth in theV appended claims.

I claim as my invention: l

l. A reinforcing structure for concrete constructions comprising two flat strip like .members of equal width connected at their central portions and diver'ging therefrom towards their ends to form an X, and the ends of said membersbeing slit and bent in Vopposite directions to forni a rectangular pocket each side of which is parallel vto and in alignment with the side of a pocket formed in an adjacent end.

2. A device of the character described, comprising two strip-like members crossed at their central portions, the ends of said members being slit longitudinally, andthe portions of the saine slit end being bent in different directions, one portion of a slit vend being in alignment with a similar poring in line with the bent extremity of the.

other member.

In testimony whereof I have signedthis specification. i

ROLAND MGWILLIAMS. 

